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No the euro s50b32 is OBD1, and you'd run its as OBD1 or standalone with megasquirt or tec3 or something.

Tranny mounts are different i believe, and the diff mounting is a little different, nothing majour as far as i know.

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I run a canadian led kit & hid kit company, if you have any questions about led headlights or hid kits in canada or would like to check out our products please contact me here: http://absolutehid.ca2002 TiAg M3 6mt deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff

You have to get over the infatuation with the exclusivity. The S54 is better than either of those motors and they are a dime a dozen in North America. So not only will it be cheaper to get, get more performance and be 100x easier to upgrade since there are dozens of tuners with ready solutions right here on this continent, if anything goes wrong, fixing it will be reasonably priced and easy.

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I run a canadian led kit & hid kit company, if you have any questions about led headlights or hid kits in canada or would like to check out our products please contact me here: http://absolutehid.ca2002 TiAg M3 6mt deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff

That I'm actually not sure of, I only know about the S50B32 because I was looking to find a crashed car in Japan and import the motor/tranny. I was told by someone in the know that it won't be worth the effort for the difficulty and the performance gain. It is much cheaper, easier and beneficial to use an S54.

That I'm actually not sure of, I only know about the S50B32 because I was looking to find a crashed car in Japan and import the motor/tranny. I was told by someone in the know that it won't be worth the effort for the difficulty and the performance gain. It is much cheaper, easier and beneficial to use an S54.

Now i've also heard it is a pain to install an s54 in an OBDI car, due to all of the wiring. Is this true?

boots, just get a american obd2 s52 3.2L and convert it to obd1. converting it gives you about 20+hp then the 240 they have listed. then from there u can S/C but i think u would be happy with 260...well i would be the euro swap and s54 are wayyy more detailed and require crazy $$ parts. and i dont think you wanna pay like 1.5K to get the dual vanos unit replaced on the euro m3 motor since they are know for going bad.

Now i've also heard it is a pain to install an s54 in an OBDI car, due to all of the wiring. Is this true?

Possibly. There's a guy on E46fanatics who has swapped it into a friggin E30 (ie OBD0), so can't be that hard. On top of all that, he swapped in an SMG S54, which has been the cause of all difficulties (the transmission is stuck in safe mode because his sensors were wonky, he's probably fixed it by now, I haven't checked in recently). But he's not having to use a remote brake booster which I know is mandatory with the S50 becuase the manifold is so huge.

But regardless, it's cheaper, easier to get, straightforward to find replacement parts (even the super expensive bits - go find an S50B32 head if something goes wrong with yours) and significantly more powerful.

Jesus, 1.5k? Thats depressing to hear. I would probably never be able to afford a swap like this anyways... probably not even a NA s52 swap. This is all just for my personal information, as i'm curious. It seems like i'm getting some pretty good answers!

Basically everything except for the long block. All of the sensors (except the coolant sensor, you can splice the dual sensor leads on OBD1 into the single OBD2), manifold, throttle body, harness, fuel rail, hell even the power steering - unless you use all of the hoses from the M52, you have to replace the pump with an M50 one. Then you need to mod the headers.

not much. just the bigger obd1 manifold+tbody, fuel rail and crankshaft sensor. MAF too (i think). also you would need a obd1 325i,525i or m3 wirning harness(with vanos)....and the obd1 413 ecu(red label has no EWS so no headaches) but the silver 413 labels could work too if you get a chip to delete the ews.